[jatins]

Is there a library/service out there that makes it really easy to make these? I have seen like 50 or so such apps crop up recently

[littlestymaar]

WebRTC itself makes videoconferencing platform incredibly easy to make (you can even just copy-past a working tutorial!). Three.js[1] makes the 3D-world part quite easy as well, then howler.js[1] does the spacial audio for you. Tada! you have your Pluto clone in a few days!

(the open-source JavaScript ecosystem is pretty impressive)

[1]https://threejs.org/

[2]https://howlerjs.com/